Fuse cutting and splitting and cap crimping tool



DSC- 8, l93lcADEMARToRl ET AL 835,274

FUSE CUTTING AND SPLITTING AND CAP CRIMPING TOOL Filed 061:. 7, 1930 INVENTORS ci; S. Uademmari and M SlDPap-er AT'roRNEY Patented Dec. 8, lgl

JOSEPH S. CADEMABTORI ANDl ATENT- OFFICE FUSE CUTTING AND SPLITTING AND CAI? CRIMPING TOOL Application filed October' '7, 1930. Serial No. 486,988.

This invention relates to improvements in tools for the use of miners to cut and splitA fuses and to crimp the caps about the same as is necessary in the association of the fuses with the charges of powder used in blasting operations.

The principal operation of our invention is to provide a tool of this character which is very convenient and easy to manipulate while performing its several operations in a proper and clean-cut manner, and in which the cutting or main working element of the tool is readily removable from the body of the tool, so that it may be resharpened or Vreplaced whenever necessary withV but little trouble, and without having to discard the entire tool. Also this cutting elelnent is mounted in connection with the body of the tool in such a manner that it is normally entirely concealed so that the sharp edges are protected from possible damage by Contact with exterior objects.

A. further object of the invention is to produce a. simple and inexpensive device and yet one which will be exceedingly effective tor the purpose for which it is designed.

These objects we accomplish by means of such structure and relative arrangement of parts as will fully appear by a perusal of the following speciiication and claims.

In the drawings similar characters of reference indicate corresponding parts in the several views: y y

i Fig. l is a. side elevation of our improved tool showing the cutting element retracted or in its normal position.

Fig. 2 is a side view posite side of the tool with the cover plate of the body reino-ved.

Fig. 2, but showing the cutting element fully advanced.

Fig. 4 is a longitudinal section taken on the line 4-4 of Fig. 1, but With the cutter taken from the op- Fig. 3 is a fragmentary view similar to ber 1 intermediate the top and bottom thereof. A straight handle 3 is rigid With and depends from the bottom oi the member 1 from the end of the same opposite the extension, and is preferably disposed at an obtuse included angle with the latter. The parts lz 2, and 3 whether made of one or several pieces are arranged together to Jform a rigid unit.

Pivoted on the body member 1 and depend- 60' ing from the bottom of the same adjacent its end nearest the extension 2 is another handle 4, disposed in trigger-like arrangement relative to the handle 3 so that they may be both gripped by the same hand, with the handle 3 65 against the palm and the fingers against the handle 4 so that .the latter may be pressed toward the handle 3. The upper portion of the handle 4 projects into a cavity 5 in the body 1 and at its upper end is forked to receive 7 the adjacent end of the cutter bar 6 of the tool therebetween; this bar being flexibly pivoted to the handle by a removable pin P or the like. This bar extends lengthwise in the extension 2, being slidably mounted in a sim* ilarly shaped cavity 7 provided therein, and which of course communicates with the cavity 5. A compression spring 8 acts on the bar at its outer end to normally hold the same away from the corresponding end of the extension, and thus maintaining the handle 4y spread relative to the handle 3.

The body 1 is provided with a cylindrical passage 9 open to the top and extending down to communicate with the cavity 5 into 85 which the adjacent portion of the bar 6 projects. This cavity is in direct transverse alineof 'fuse inserted into said passage; the diam- 90 eter of the passage being sufficient to freely receive the fuse therein. Narrow slots 10 extend :from the passage at thebottom to the ends o t the body l above the plane of the 95 extension 2.

Formed with and projecting upwardly from the bar 6 at its handle end is a relatively thin blade 11 whose cutting edge is vertically disposed and faces the opposite end of the bar. The blade is normally disposed tion cavity, another' handle pivoted on the end portion of the body in cooperating relationship with the irst named handle and eX- tending into the corresponding cavity for pivotal connection with the adjacent end of the bar, said bar and extension intermediate their ends having normally registering transverse slots open to the top of the eXtension and bar; the opposite ends of the slots oi' the bar and extension respectively and on one side being sharpened to form cooperating cutting elements.

2. In a tool of the character described, a hollow body member, a bar slidably mounted in said member, said bar and member having transverse slots open on the top of the same and of suilicient width and depth to receive the cross sectional area of a fuse therein, cooperating` cutting edges formed on adjacent sides of the bar and body member at the opposite ends oi' the corresponding slots, and hand means applied to the bar for moving the same lengthwise in the body member.

3. In a tool of the character described, a hollow body member, a bar slidably mounted in said member, said bar and member having transverse slots open on the top of the same and of sufficient width and depth to receive the cross sectional area of a fuse therein, cooperating cutting edges formed on adjacent sides of the bar and body member at the opposite ends of the corresponding slots toward the bottom thereof, means acting on the bar to normally maintain the slots in alinement whereby the cutting edges are separated, a handle rigid with the body member depending from the same at one end, and another handle connected to the adjacent end of the bar and pivoted on the body member, said last named handle depending in cooperating relationship to the rigid handle.

4. A structure as in claim 2, in which the cutting edge of the bar-slot is normally disposed inwardly of the adjacent end of the slot of the body member, whereby said edge is protected against damaging contact with eX- terior objects.

5. A structure as in claim 2, in which the body member, beyond the slot, is provided with a circular passage open to the top and depending to the upper surface of the bar, and a blade projecting upwardly from said bar to move diametrally across the passage over a certain portion of the length thereof, with the longitudinal movement of the bar, said blade being normally clear of the passage.

6. In a fuse splitting tool, a body member having a circulaifuse-receiving passage eX- tending downwardly'from the top, a bar slidably mounted in the body below and in the plane of the passage whereby to form a stop for a length of fuse inserted in said passage, a blade on and upstanding from the bar and movable across the passage to split the fuse for a portion of its length, means acting on the bar to normally hold the blade beyond one side of the passage, and hand means for sliding the bar lengthwise to cause the blade to move across the passage.

7 A structure as in claim 2, in which one side of the body is formed as a removable plate whose removal exposes the bar, and said bar is removably connected to said bar Inovmg means.

In testlmony whereof We aiiix our signav tures.

JOSEPH S. CADEMARTORI. WALLACE S. DRAPER. 

